The evolution of microstructure in a Mg 3.4%AI-0.16%Zn-0.33%Mn alloy tube was studied during deformation by ring hoop tension testing (RHTT). When the tests were carried out at moderate temperatures and relatively high strain rates, the accompanying c-axis strains were mainly accommodated by twin formation. At temperatures above 200°C and the lowest strain rate (0.001s-1), the formation of voids in the partially dynamically recrystallized regions caused premature fracture. The microstructural development in hot gasformed samples was similar to that observed during RHTT testing. These results indicate that RHTT testing is an effective way of studying the deformation behavior of Mg alloys during tube gas forming.


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    Title :

    Microstructure Development in a Magnesium Alloy Tube during Ring Hoop Tension Testing and Warm Gas Forming


    Additional title:

    Sae Int. J. Mater. Manf
    Sae International Journal of Materials and Manufacturing


    Contributors:
    Jonas, J. J. (author) / Boyle, K. P. (author) / Jiang, L. (author) / Martin, P. (author) / Mishra, R. (author)

    Conference:

    SAE World Congress & Exhibition ; 2008



    Publication date :

    2008-04-14


    Size :

    6 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    2008-01-0212 Microstructure Development in a Magnesium Alloy Tube during Ring Hoop Tension Testing and Warm Gas Forming

    Jiang, L. / Jonas, J.J. / Boyle, K.P. et al. | British Library Conference Proceedings | 2008


    Warm forming of aluminium/magnesium alloy sheet

    Shehata, F. / Painter, M.J. / Pearce, R. | Tema Archive | 1978


    Warm forming of magnesium sheet metal

    Siegert,K. / Jaeger,S. / Univ.Stuttgart,DE | Automotive engineering | 2004


    Warm Forming of Magnesium Sheet Metal

    Siegert, K. / Jäger, S. | SAE Technical Papers | 2004